Rubber bucket for chain-pumps



(No Model.

. E. W. GRANT.

- y RUBBER BUGKETZEUR CHAIN PUMPS. 10.259,847'. lPabtmnnd June 2.0, .1882.,

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UNITEDA STATES PATENT OFFICE.

EDWARD W. GRANT, OF YPSILANTI, MICHIGAN.

RUBBER BUCKET FOR CHAIN-PUMPS.

SPECIFICATION forming part of Letters Patent No. 259,847, dated June 20, 1882.

' Application filed April 4, 1882-. (No model.)

To all whom it may concern Beit known that I, EDWARD W. GRANT, of Ypsilanti, in the county of Washtenaw and State'ot Michigan, have invented certainnew and useful Improvements in Rubber Buckets for Chain-Pumps; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

Figure 1 is a side elevation, and Fig. 2 a central vertical section, of my invention.

This linvention relates to an improvement on chain-pump buckets which are made of vulcanized india-rubber; and the nature vot' my invention consists in a reversible double conical bucket having an annular groove formed .in it in such manner as to leave two circular ypiston tlanges or bearings for the .bore of the pump-stock, and to obtain a water-packing between the anges, said bucket being provided with means for expanding it in connection with the link, vall as will be fully understood from the following description, when taken in connection with the annexed drawings.

The letter A designates theV india-rubber part or body of the improved pump-bucket. The generaloutline of this bucket-body is represented by Figs. 1 and 2, which represent two frusta of cones with their bases together, and an annular groove, a, at said bases. This groove is of considerable depth, so as to leave Ytwo annular flanges, b b. having rounded edges welldetined, which are designed to bear against the inner wall of a pump-stock. The groove between the flanges will become lled with waterlduringthe yworking of the pump, which.

will serve as a water-packing, and in a meas-l ure as ameans for lubricating the parts. The beveled surfaces c c aii'ord more or less ilexibility to the langes b b, and these surfaces terminate Ain flattened surfaces d d, between which the bucket is thickest, for affording material for expanding it diametrically.

B designates'the link, which is composed of two parts. The part e has a screw-stein, a flange, and an eye. The other part, f,consists of an eye, a flan ge, and afemale-screw-th readed socket adapted to screw on the said stern.

Between the partf and the body of the bucket is a washer, g, and a nut, h, the object of which latter is to allow the use of a wrench in compressing the body of the bucket to expand it diametricallyz The part f serves as a jam-nut for holding the nut h.

The bucket which I have described is not liable to leak its water when the pump is in operation, and for this reason a constant and t'ull stream ofwater is discharged. Then, again, should one of the flanges b become damaged, the other liange is left to do duty until a new bucket or dan ge is substituted.

Having described my invention, I claiml. The combination, in apump-bucket, ofthe elastic body A, having bevels c c and an intermediate groove, a., with the parts B, 6,]L, and f, all arranged and adapted to operate in the manner and for the purposes substantially as described.

2. In a reversible chain-pump bucket, the combination of' two elastic frusta of cones whose bases are of equal diameter, having langes of equal diameter between their bases, and anfannular groove, a, with a link-clamping device, substantially in the manner and for the purposes described.

3. A rubber chain-bucket consisting of the following elements in combination: a doubleheveled annularly-grooved portion, A, having flanges b of equal diameter, the parts Bj', the screw-stem on the part B, the pristnatic nut h, and the washer g, all arranged and combined as an entirety, substantially as described.

In testimony that I claim the foregoing as my own invention I affix my signature in presence of two witnesses.

.EDWARD W. GRANT. 

